Martial Arcanist and Caster Level Boosting Items/Feats

[AngelisBlack]

I'm participating in an epic leveled campagin, and two issues have come up regarding my build.

Does the Abjurant Champion's "Martial Arcanist" class feature prevent the use of CL boosting items such as an orange ioun stone or a ring of arcane power?

Also the Divine Power spell at epic seems a bit broken considering how it sets your BAB equal to your character level. Have there been any official WotC articles or written rules on how to handle that spell at levels above 20?

[Eisenfavl]

For the second one:
Epic just makes an already awesome spell better. You BAB become equal to your hitdice, AND you keep your epic attack bonus. I don't know of any errata myself.